v. con·gest·ed, con·gest·ing, con·gests
1. To overfill or overcrowd: Trucks congested the tunnel.
2. Medicine To cause the accumulation of excessive blood or tissue fluid in (a vessel or organ).
To become congested.
[Latin congerere, congest-, to heap up, crowd together : com-, com- + gerere, to carry.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.